PCF8574T module 8-bit expander, thanks to which we can increase the number of pins of the microcontroller, e.g. in ARDUINO modules. One bus can handle up to 8 systems of this type, gaining 64 additional digital pins. The address is changed by means of dip-switches. TECHNICAL DATA: Power supply: 2.5V - 6V Current consumption: 100mA when transmitting data, or 10mA in stand-by mode Standard of logic levels: Depending on the 3.3V or 5V power supply Communication: I2C bus (TWI), address from 0x38 to 0x3F Current efficiency of outputs in low level: 25 mA Current efficiency of outputs in high level: maximum 300mA https://elecena.pl/product/22624515/pcf8574-8-bit-gpio-i2c-pin-expander-module-arduino 2023-02-23 https://elecena.pl/product/22624515/pcf8574-8-bit-gpio-i2c-pin-expander-module-arduino 2024-09-24 https://elecena.pl/product/22624515/pcf8574-8-bit-gpio-i2c-pin-expander-module-arduino 2025-10-26 https://elecena.pl/product/22624515/pcf8574-8-bit-gpio-i2c-pin-expander-module-arduino 2025-10-28